import express from 'express';
import jwt from 'jsonwebtoken';
import * as dotenv from 'dotenv';

dotenv.config({
    path: ['.env.local','.env']
});

const app = express();
const port = 3000;

async function authKlingai(){

    const headers ={
        algorithm:'HS256',    
    }
    const now = Math.floor(Date.now() / 1000);
    const payload ={
        iss:process.env.ACCESSS_KEY_ID,
        exp:now +1800,
        nbf:now-5,
    }
    //用 kling的 密钥 生成一个令牌
    const token =jwt.sign(payload,process.env.ACCESS_KEY_SECRET,headers)
    return token
}

//定义了一个 get 接口
app.get('/jwt-auth',async (req,res)=>{
    const token =await authKlingai()
    res.send(token)
})

app.listen(port, () => {
  console.log(`Example app listening at http://localhost:${port}`)
})